[Badshah93]

open memberlist template

Find:

<vb:if condition="$show['usergroup']"><th class="blocksubhead"><input name="allbox" type="checkbox" value="Check All" title="{vb:rawphrase check_uncheck_all}" onclick="checkall(this.form);" /></th></vb:if>

ADD AFTER THAT

<th class="blocksubhead">Gamecard
</th>

open memberlist_resultsbit template

Find:

<vb:if condition="$show['usergroup'] AND exec_switch_bg()"><td class="{vb:raw bgclass} usergroup"><vb:if condition="$show['hideleader']">&nbsp;<vb:else /><input type="checkbox" name="deletebox[{vb:raw userinfo.userid}]" value="yes" tabindex="1" /></vb:if></td></vb:if>

ADD AFTER THAT

<td class="{vb:raw bgclass} profilepic">                <iframe src="http://gamercard.xbox.com/{vb:raw userinfo.fieldX}.card" scrolling="no" frameBorder="0" height="140" width="204">{vb:raw userinfo.fieldX}</iframe>
</td>

Replace X with your field name of gamertag and open the field of gamertag in user profile fieldmanager and uncheck "show in memberlist" (else double column will be shown).